She told ABC7, "They were telling me she had gotten the bruising on her hands by banging on the bed railing.

"Every time I tried to go and complain, they said, "We know, it's going to be investigated."

Valentin documented over 600 hours of video before having her fears confirmed, she said.

(Google)

Unhappy with the explanation, she installed the surveillance device and recorded more than 600 hours of footage.

On Sept. 12 last year, Kerr is allegedly seen pushing Medina into a metal railing of the bed. Two days later she is seen hitting her twice in the side in the side of her body.

"The first video that I saw, she grabbed my grandmother's arm, twisted it back, lifted her off the bed and slammed her into the bed," Valentin said.

Medina has now been transferred to a different nursing home in New Rochelle.

Gold Crest Care Center has not commented on the claims.

Valentin said the nursing home failed to act on her suspicions, so she took matters into her own hands.

(WABC)

“My office has zero tolerance for nursing home aides who abuse, neglect or harm the people in their care,” said Attorney General Schneiderman.

“Medical professionals have a responsibility to properly care for their patients and must be held accountable when they fail to protect our most vulnerable citizens.

“My office has zero tolerance for nursing home aides who abuse, neglect or harm the people in their care. Medical professionals have a responsibility to properly care for their patients and must be held accountable